26257838680 has 64 divisors (see below), whose sum is σ = 62569117440. Its totient is φ = 9896506752.

The previous prime is 26257838647. The next prime is 26257838681. The reversal of 26257838680 is 8683875262.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26257838681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151354 + ... + 274633.

It is an arithmetic number, because the mean of its divisors is an integer number (977642460).

Almost surely, 2^26257838680 is an apocalyptic number.

26257838680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26257838680 is an abundant number, since it is smaller than the sum of its proper divisors (36311278760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26257838680 is a wasteful number, since it uses less digits than its factorization.

26257838680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426088 (or 426084 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 55.

The spelling of 26257838680 in words is "twenty-six billion, two hundred fifty-seven million, eight hundred thirty-eight thousand, six hundred eighty".